iOS颜色进制转换

进制颜色转换

+(UIColor *)changeColor:(NSString *)str{

    unsigned int red,green,blue;

    NSString * str1 = [str substringWithRange:NSMakeRange(0, 2)];

    NSString * str2 = [str substringWithRange:NSMakeRange(2, 2)];

    NSString * str3 = [str substringWithRange:NSMakeRange(4, 2)];

   

    NSScanner * canner = [NSScanner scannerWithString:str1];

    [canner scanHexInt:&red];

   

    canner = [NSScanner scannerWithString:str2];

    [canner scanHexInt:&green];

   

    canner = [NSScanner scannerWithString:str3];

    [canner scanHexInt:&blue];

    UIColor * color = [UIColor colorWithRed:red/255.0 green:green/255.0blue:blue/255.0 alpha:1.0];

    return color;

}